Textile machinery spool and core



Nov. 7, 1933. E. G. cRooKs 1,934,168

TEXTILE MACHINERY SPOOL AND CRE Filed Oct. 24, 1931 EMZGCWUOJS.

vv/TNESS er mi( IT/ W? HT'TOHNEYS Patented Nov. 7, 1933 TEXTILE MACHINERY sPooL AND come:

Earl G. Crooks, Elmira, N. Y., assignor to Chemung Engineering Corporation, Elmira, N. Y., a corporation of New York Application October 24, 1931. Serial No. 570,830

12 Claims. (Cl. 242-118) iviy invention relates to the spools employed in the textile industry and to the cores or spindles on which they are operatively supported.

Such s"ools are utilized, primarily, for holding Vad which is wound thereon or unwound therencin while the spool is supported on a suitable core or spindle, in turn generally supported in some form of textile machinery, but as the thread while onthe spool is sometimes steamed or subi@ jected to other operations in which the core is not required, it is desirable for this and other reasons that the spool be readily separable from the core.

My invention therefore contemplates the provision of a novel form of spool and a novel form of core adapted for assembly therewith to form an operative unit of such character that the spool will rotate with the core when the latter is driven and is also restrained from accidental or unin- QG tentional axial movement with respect thereto, so that the spool will remain firmly seated on the core through the various operations incident to its use in conjunction with the core although readily detachable therefrom when desired.

InV consequence, through the medium of my invention, it is feasible to provide the various machines in a given establishment with the cores of my invention and to utilize throughout the plant but a single type of thread carrying spool 3C- adapted for assembly on any of the cores, thus eliminating the expense, confusion and annoyance incident to the present practice of using different types of spools and cores or other suppoi ing means therefor for different operations in connection with different machines. principal object of the invention, therefore, is the provision of an improved spool and core assembly so designed and constructed that when the parts are operatively associated the spool is ly seated on the core, prevented from accid .ital or unintentional longitudinal separation therefrom or movement relative thereto and also constrained to rotate unitarily with the core although readily separable therefrom.

A further object of the invention is to provide such character that the core portion thereof may be more or less permanently arranged as an element of a textile or other machine adapted either to positively drive the core or to permit it to run freely so that the spools can be interchangeably 60. seated on the cores when. so arranged or detached therefrom when and as required, and the thread thus wound on the spool by rotating the core through the medium of the machine of which it forms a part or unwound therefrom asby allowing the core to run free and pulling oif the thread,

in accordance with the particular operation being performed, while by entirely removing the spool from the core the thread can be steamed or subjected to other treatmentv which-might be injurious to the core although not inimical to the spool.

Additional objects, advantages and novel features of design, construction and arrangement comprehended by the invention are hereinafter more particularly pointed out or will be apparent to those skilled in the art from the following description of one embodiment thereof as illustrated in the accompanying drawing forming a part hereof and to which reference will now be so made.

In the said drawing, Fig. 1 is a central longitudinal or axial section of thespool and core of my invention in operatively assembled relation, and Figs. 2 and 3 are respectively end elevations 85 thereof. Fig. i is a transverse'section lthrough the spool shown in Fig. l removed from 'the core and substantially on the plane 4 4 looking in the direction of the arrows; Fig. 5 is a central longitudinal section of the spool on the plane 5,-5 in 90 Fig. li, and Fig. 6 is a similar fragmentary section on the plane 6-6 thereof. Fig. 7 is a side elevation of the core apart from the spool; Fig. 8, an end elevation thereof looking toward the right,

Figs. 9 and 1G, respectively perspective Views 95 of certain of the component parts of the core prior to assembly. Throughout the drawing, the saine characters of reference are used to designate the same parts.

The spool S is desirably molded from heat a novel form of spool and also a novel form of core adapted for assembly therewith to form an operative unit, both capable of manufacture at a low cost, the spool being preferably made of a material which does not injuriously or otherwise affect the thread during the steaming or other operations to which it may be subjected either while disposed on or separated from the core.

A still further object of the invention is to provide a novel form of spool and core assembly of resistant glass, such a spool forming the subject of a pending application for U. S. Letters Patent, Serial No. 531,442, led April 31, i931, by'Earl G. Crooks and Charles H. Sayre, although other materials may be employed, if preferred, and is of corresponding external diameter through the operation of which, in conjunction with the mold, a high degree of pressure is exerted on the plastic glass so as to cause the latter to properly conform to the mold cavity. The presence of this relatively large axial bore thus serves, among other things, to structurally differentiate the spool from those commonly in use which comprise an axial bore of relatively small diameter, sometimes provided with a metal bushing or liner, through which is inserted the spindle upon which the spool is supported when in use. Under practical conditions of manufacture, it has been found diicult to eliminate minor variations in diameter and taper in the bores of these molded glass spools, and the core of the present invention is therefore designed, among other things, to suitably support and center the spools when assembled therewith irrespective of such variations and, in turn, to provide satisfactory means for receiving the spindle or other part on which the core is ordinarily operatively mounted.

More particularly, the spool comprises, as usual, an exteriorly cylindrical body 1 through which extends the axial bore 2 to whichreference has just been made and adjacent the ends of which are anges 3,- 3 which assist in retaining the thread on the body, the former being disposed at what may, for convenience, be termed the base of the spool and the latter at its opposite or upper end. The outer face of the flange 3 may be provided with an annular offset 4 surrounding the adjacent end of the bore 2 and chaznfered at its junction therewith to provide an annular recess 5 for a purpose to be hereinafter escribed; this recess is concentric with the axis of the spool and may be readily and accurately molded therein during its process of manufacture. Preferably, as stated, the bore 2 is inwardly tapered and thus slightly conical from the base of the spool toward its upper end, and for a considerable distance beyond the base is of generally circular cross section. Toward its upper end, however, the bore is made of substantially polygonal cross section by providn ing it, as best shown in Fig. 4, with a plurality of generally parallel lands "J separated by grooves 8, the number of lands and grooves employed being a mattei' of choice, although six, as shown, will usually be preferred. These lands and grooves, the bottoms of the latter being in reality merely extensions of the conical portion of the core, may be readily formed during the process of molding the spool by correspondingly shaping the end of the plunger which produces the bore.

Beyond the zone or area containing the lands and grooves, the interior of the bore is preferably ground to produce an area or cone 9 of truly circular cross section and predetermined diari-- eter and is outwardly beveled or flared as at 1C from the extremity of this Zone to the end face of the spool, this bevel being conveniently formed during the molding operation as it does not have to be absolutely accurate. For the reasons heretofore mentioned, some variation in diameter and taper will ordinarily occur in the bores of a series of spools produced from the same mold,

but of course the zone 9, which is ground after the molding operation is completed, can be made of constant diameter throughout the series and is preferably slightly tapered outwardly from its corfiprises a cylindrical body 15 oi maple or other hard wood or, in fact, of any suitable material. Ti body is or suitable diameter to nt loosely in the bore of spool and at its lower or right hand end, en viewed as in Figs. 1 and 7, is provided with an integral flange i6 received in a metallic vcup i7 having at its open end a peripheral flange i8 of suitable size and thickness to snugly seat in the annular recess 5 in the base e spool when the core is assembled therein and thus center the core with respect to the adjacent end of ney spool, the cup being desirably pressed drawn 'from sheet metal and either frictiomaly retained on the ange or glued or v secured in place thereon. Under cerconditions, the 'cup may be omitted and a peripheral ilange corresponding to the flange 18 for1 directly on the flange 16 for a like purwhile the core will generally be provided with an axial hole i9 for the reception of a supporti g i )indie Vor the like. y

vacont the opposite end of the core aredismoons adapted to prevent material rotaccre u len assembled within the spool accidental or unintentional lonation i the parts, and while these o. :e o. any character suitable'for ormance of their lintended function, a

sediment thereof comprises, as

.ving, a plurality of symmetri- .aiy spaced, generally longinding lient elements 20 formed f ing steel or like suitable material and xedsecured to the body l5 oi the core. As best sin wn in le, each of these elements may generally ilat and preferably 'transversely curved body 2l, a toe 22 The toe is desirably bent slightly vardly from the body 21 and has e tremity still further outwardly bent to form 2i pref .bly disposed at an angle sub- .ornilng to the outward inclination and may be oppositely inwardly ta.- om its junction with the body 21 which than the toe so as to provide e end of the body 21 is also prefarrower than the latter at its tl rer n and is first bent upwardly or outwardly therefrom and then continued substantially parallel thereto so that when the element assembled on the body of the core the which. is preferably transversely curved or dared oppositely outwardly at its he spaced from said body for at least major portion of its length.

Preferably, the number of elements provided is to one-halt of the number of lands 7 in the r or less number thereof in the spool, three of srrably be utilized on the core and, as stated, syminetl cally circuinferentially spaced about and vseured to the core body sc as to extend parallel to it axis by any suitable means such, for example and as preferred, by a cylindrical ferrule '25, approximating in length the central portions 2l of the elements, which is seated over and constricted about the latter and the core body which is desirably reduced in diameter as at 25 to receive the erruie and adjacent portions of the elements. Beyond the reduced` area 26, the body of the core operative with the wall of said recess to center the core with respect to the adjacent end of the spool, means cooperative with said region of non-circular cross section to resist relative rotation between the spool and the core, and resilient means at its other end adapted to yieldingly resist axial movement therebetween.

3. In combination, a spool having an axial bore embodying a region of non-circular cross sectionand a recess adjacent one end of the bore, and a core having a body of less diameter than the least diameter of the bore removably seating therein and comprising means cooperative with said recess to center the core with respect to the adjacent end of the spool, means cooperative with said region of non-circular cross section to resist relative rotation between the spool and the core, and means adapted to` yieldingly resist axial movement therebetween including a pluraliy of resilient elements disposed in circumferentially spaced relation about the core and respectively provided with portions adapted to engage the spool adjacent that end thereof remote from said recess when the core is assembled in the spool.

4. In combination, a spool comprising an axial 'i bore having a region of polygonal cross section, a

Zone of circular cross section extending from said region toward one end of the spool, and a recess surrounding the end of the bore remote from said zone, and a core removably seating in the bore and comprising adjacent one end means cooperative with said recess to center the core in the spool and, adjacent its other end, a plurality of resilient elements respectively provided with portions adapted to engage said polygonal region to resist relative rotation of the core and spool and other portions operative by yielding engagement with the spool adjacent said Zone to yieldingly resist axial separation of the core and the spool. 5. In combination, a spool comprising an axial bore having a region of polygonal cross section, a zone of circular cross section extending from said region toward one end of the spool, and a recess surrounding the end oi the bore remote from said Zone, and a core removably seating in the bore and comprising adjacent one end means cooperative with said recess to center the core in the spool and, adjacent its other end, a plurality of symmetrically circumferentially spaced resilient elements extending parallel to the axis of the core and each comprising a toe portion adapted to engage the spool to yieldingly resist relative axial movement ofthe core and the spool, and a heel portion cooperative with said polygonal region to resist relative rotation therebetween.

6. In combination, a spool having an axial bore extending therethrough, an outwardly beveled zone adjacent one end of the bore and a region within the bore of non-circular cross section, and a core removably seating in the bore and comprising a body, a plurality of resilient elements having their opposite extremities outwardly spaced from said body and respectively adapted to yieldingly engage said beveled zone to resist axial separation of the core and the spool and to engage said non-circular region to resist relative rotation between the core and the spool.

7. In combination, a spool having an axial bore I prising a body, means cooperative with the recess to center the core in the spool, a plurality of resilient elements having their opposite extremities outwardly spaced from said body and respectively adapted to yieldingly engage said beveled zone to resist axial separation of the core and the spool and to engage said non-circular region to resist relative rotation between the core and the spool.

8. In combination, a spool having a bore embodying a region of polygonal cross section, an annular recess surrounding one end of the bore and an outwardly beveled Zone of circular cross section adjacent its other end and coaxial with the spool, and a core removably seating in the bore and comprising means cooperative with the wall of said recess to center one of its ends in the spool, and resilient means cooperative with said outwardly beveled zone to center its other end therein.

9. A spool of the class described comprising an axial bore having a region bounded by alternating axially extending lands and grooves, a zone of circular cross section extending from said region to a point in proximity to one en-d of the spool and an outwardly beveled Zone interposed between said circular Zone and the adjacent end face of the spool.

10. A spool of the class described comprising an axial bore having an annular recess adjacent one end of the bore, ra region within the bore" bounded by longitudinally extending lands and grooves, a Zone of circular cross section between said region and the opposite end of the bore, and an outwardly flaring zone extending from the end of the said zone of circular cross section.

1l. A spool of the class described including a cylindrical body having abore gradually inwardly tapering for the major portion of its length from a point adjacent one end of the spool to a point adjacent its other end, and then tapering outwardly toward said end, the walls of the respectively tapered portions of the bore forming opposite angles to the axis thereof.

12. A spool of the class described having an axial bore of least diameter at a point nearer one of its ends than the other, said bore comprising a portion gradually outwardly tapered with respect to its axis terminating in one end face of the spool, and another sharply outwardly tapering portion terminating in its other end face, the walls of said respectively tapered portions of the bore forming opposite but dilTerent acute angles with said axis.

EARL G. CROOKS. 

